Задача id9605

Two point charges q1 > O and q2 < O are located in the air at a distance d from each other. Find the strength and potential of the field created by these charges at point A, located at a distance r1 from the positive charge and at a distance r2 from the negative one. (Point A does not lie on the straight line connecting charges q1 and q2, d < r1 + r2)

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